Born about in Ireland
[uncertain]
Ancestors [uncertain]
Son of Donal Mor (O'brien) O'Brien
and [mother unknown]
[sibling(s) unknown]
[spouse(s) unknown]
Descendants 
Father of
Turlough O'Brien
Died [date unknown]
in Ireland [uncertain]
[uncertain]Profile last modified
| Created 21 Feb 2011
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This profile lacks source information. Please add sources that support the facts.
The Birth Date is a rough estimate. See the text for details.
Biography
Estimated birth year 1450. Possibly the "Mortogh Casch", son of "Donal Mor" (died 1508), grandson of Teige (died 1474), great-grandson of Turlogh (died 1399), on this well-known pedigree of the O'Briens of Ara.[1]
Note: "Caoch" means "one-eyed".
Family Connections
Great-grandfather of Lady Joan FitzGerald, wife of James Butler, 9th Earl of Ormond (7 sons) until he was poisoned in London in 1546. She then briefly married Sir Francis "Vicar of Hell" Bryan (no known issue) followed by Gerald FitzGerald, 15th Earl of Desmond (no known issue).
Sources
- ↑ Donough O'Brien, "History of the O'Briens from Brian Boroimhe, AD. 1000 to AD. 1945", published 1949: https://archive.org/details/historyofobriens00obri/page/182/mode/2up
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DNA Connections
It may be possible to confirm family relationships with Murtogh by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA. Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
It may be possible to confirm family relationships with Murtogh by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA. Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
- Conor Myles John O'Brien
:
Family Tree DNA Y-DNA Test, haplogroup R-FGC13418, FTDNA kit #29355
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Comments
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O > O'brien > Murtogh Caoch (O'brien) O'Brien
Categories: Unsourced Profiles | Ireland, Unsourced Profiles | Estimated Birth Date